44:21
Ad-Dukhan 21
Surah Ad-Dukhan (الدخان), verse 21 — reference 44:21. Arabic text with optional translation and free audio on Al-Qalam.
وَإِن لَّمْ تُؤْمِنُوا۟ لِى فَٱعْتَزِلُونِ
wa-in lam tu'minū lī fa-iʿ'tazilūni
But if you do not believe me, then leave me alone."